Welding tool for assembling transformer oil tank body

Abstract

The invention discloses a welding tool for assembling a transformer oil tank body, and relates to the technical field of welding supporting equipment. Comprising a base, protective covers are symmetrically and slidably connected to the outer wall of the base, fans are fixedly mounted at the top ends of the protective covers, a mounting groove is formed in the inner wall of the base, a limiting device is arranged in the base, and an outer supporting device is arranged on the outer wall of the base. Through a linkage structure of a two-way screw of the limiting device, an adjusting screw and the outer supporting device, longitudinal and transverse flexible adjustment of the outer supporting device can be achieved, transformer oil tank bodies of different sizes and specifications can be adapted, a special tool does not need to be replaced, and the universality of equipment is greatly improved; and the threaded connection structure has a self-locking function, automatic pre-fixing can be achieved after adjustment, and displacement caused by external force is effectively avoided in cooperation with secondary fastening of the fixing screw and the fixing block, and the position precision in the assembling and welding process is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of welding support equipment technology, and more specifically to a welding fixture for assembling a transformer tank body. Background Technology

[0002] As the core load-bearing and protective component of a transformer, the precision and stability of its assembly and welding directly affect the overall operational safety and service life of the transformer. During transformer production, the tank dimensions need to be flexibly adjusted according to the transformer capacity, installation scenario, and other requirements, which places strict demands on the adaptability and versatility of the welding fixtures.

[0003] However, in the existing technology, the welding fixtures used for assembling transformer tank bodies are mostly fixed structures or can only achieve simple adjustment in one direction. They can only be adapted to tank bodies of specific sizes. Changing to different specifications requires effort, which not only increases production costs but also extends the production cycle. Moreover, the support, protection, and deformation control effects are not good. Existing fixtures mostly focus on clamping and fixing in one direction. When relying solely on external clamping, the tank wall is prone to tipping over due to uneven force, especially for large-sized or thin-shell tank bodies, where the risk of tipping is even higher. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the technical solution adopted by this invention is as follows: a welding fixture for assembling a transformer tank body, comprising: a base, a protective cover symmetrically and slidably connected to the outer wall of the base, a fan fixedly installed at the top of the protective cover, an installation groove formed on the inner wall of the base, a limit device provided inside the base, an external support device provided on the outer wall of the base, and an internal support device provided inside the external support device; the external support device includes a bottom support frame, a working platform fixedly connected to the bottom end of the bottom support frame, a safety rope hanging rod fixedly connected to the outer wall of the working platform, installation slots formed on the outer walls of both the bottom support frame and the working platform, a fixing plate fixedly connected to the outer wall of the bottom support frame, and an inclined ladder fixedly connected to the outer wall of the bottom support frame, with a safety door rotatably connected to the top of the inclined ladder; the internal support device includes an installation frame, a counterweight installation plate fixedly connected to the bottom end of the installation frame. The two mounting frames are connected and fixed to the base with T-bolts. The counterweight mounting plate is used to add counterweights, which not only prevents the box wall from tipping over, but also helps to control the welding deformation of the box bottom through the weight of the frame itself. The protective covers are symmetrically arranged at both ends of the base and are mainly composed of a movable frame and a tarpaulin. They can be folded up and unfolded. Before welding, the protective covers at both ends are opened far apart to allow workers and the parts to be welded to enter. After entering, the protective covers at both ends are slid closed. The contact parts of the two protective covers are equipped with magnetic blocks so that the protective covers are not easy to separate after they are close together and sealed. The interior of the protective covers is equipped with lighting to assist the welding work.

[0005] The present invention is further configured such that the bottom end of the bottom support frame is slidably connected to the outer wall of the base, the top end of the inclined ladder is fixedly connected to the outer wall of the working platform, the bottom end of the bottom support frame is slidably connected to a frame fixing component, and the outer wall of the mounting frame is slidably connected to the outer wall of the base.

[0006] The invention is further configured such that an anti-tipping rod and a positioning screw are provided inside the mounting slot. A sliding mounting block is threadedly connected to the outer wall of the anti-tipping rod and the positioning screw. The outer wall of the sliding mounting block is slidably connected to the inner wall of the mounting slot, and the outer wall of the positioning screw is threadedly connected to the inner wall of the mounting frame. The positioning screw and the anti-tipping rod are installed in the mounting slots on the four bottom support frames via the sliding mounting block. The position and angle of the tank wall can be adjusted during the assembly of the tank body. An anti-tipping rod can be installed on the upper part of the external working platform to hook onto the upper part of the tank wall and prevent the tank wall from tipping over.

[0007] The invention is further configured such that the frame fixing assembly includes a fixing screw, a fixing nut threadedly connected to the top end of the fixing screw, and a fixing block rotatably connected to the bottom end of the fixing screw. During the movement of the outer support device, the fixing block on the bottom support frame slides within the mounting groove. When it stops moving, rotating the fixing nut, through its threaded connection with the fixing screw, causes the fixing screw to move the fixing block upwards until it contacts the inner wall of the base, thereby securing the bottom support frame to the mounting groove of the base.

[0008] The present invention is further configured such that the outer wall of the fixing screw is slidably connected to the inner wall of the bottom support frame, the outer wall of the fixing nut is slidably connected to the outer wall of the bottom support frame, and the outer wall of the fixing block is slidably connected to the inner wall of the mounting groove.

[0009] The present invention is further configured such that the limiting device includes a bidirectional screw, a movable rod symmetrically threaded to the outer wall of the bidirectional screw, and limiting rods symmetrically arranged on the outer side of the bidirectional screw. A sliding rod is fixedly connected to the outer wall of the movable rod. An external drive motor rotates the bidirectional screw of the limiting device, causing the symmetrically threaded movable rods to slide along the outer side of the limiting rods, thereby moving the fixedly connected sliding rods. Through the connection between the locking block on the sliding rod and the fixed plate on the outer support device, the bottom support frame moves longitudinally on the base, adjusting the position of the bottom support frames at both ends.

[0010] The present invention is further configured such that the outer wall of the bidirectional screw is rotatably connected to the inner wall of the base, the outer wall of the moving rod is slidably connected to the inner wall of the base, the outer wall of the limiting rod is fixedly connected to the inner wall of the base, and the inner wall of the moving rod is slidably connected to the outer wall of the limiting rod.

[0011] The invention is further configured such that a telescopic cover is fixedly connected to the outer wall of the movable rod, and the end of the telescopic cover away from the movable rod is fixedly connected to the inner wall of the base. The outer wall of the sliding rod is slidably connected to the inner wall of the base. The telescopic cover retracts according to the movement of the movable rod, protecting the internal components of the limiting device and preventing welding impurities from entering.

[0012] The invention is further configured such that adjusting screws are symmetrically arranged on the inner wall of the sliding rod, a driving block is screwed to the outer wall of the adjusting screw, a locking rod is fixedly connected to the outer wall of the driving block, a locking block is slidably connected to the outer wall of the locking rod, and a limiting groove is formed on the inner wall of the locking block. Rotating the adjusting screws on the sliding rod causes the driving block to move laterally on the sliding rod via its threaded screws with the driving block. Then, the locking block connects to the fixing plate of the outer support device via the limiting groove, allowing the outer support device to move laterally.

[0013] The invention is further configured such that the outer wall of the driving block is slidably connected to the inner wall of the sliding rod, the outer wall of the locking block is slidably connected to the outer wall of the bottom support frame, and the inner wall of the limiting slot is slidably connected to the outer wall of the fixing plate. The locking block of the limiting device contacts the bottom support frame, and under the action of gravity, the locking block slides downwards on the locking rod, causing the limiting slot to engage with the fixing plate, thus completing the connection between the limiting device and the outer support device.

[0014] The beneficial effects of this invention are as follows: 1. This invention, by setting a limiting device, and through the linkage structure of the bidirectional screw of the limiting device, the adjusting screw and the external support device, can realize flexible adjustment of the external support device in the longitudinal and lateral directions, which can be adapted to transformer tank bodies of different sizes and specifications without the need to change special tooling, greatly improving the versatility of the equipment; and the threaded connection structure has a self-locking function, which can automatically pre-fix after adjustment, and with the secondary tightening of the fixing screw and the fixing block, it can effectively avoid displacement caused by external force and ensure the positional accuracy during assembly and welding.

[0015] 2. This invention incorporates an internal support device, which, through a combination of a mounting frame and a counterweight, provides anti-tipping protection for the tank wall and utilizes the frame's own weight to help suppress welding deformation at the tank bottom. The positioning screw of the external support device allows for precise fine-tuning of the tank wall position and angle, while the anti-tipping tie rod reinforces the tank wall from above. The combined effect of internal and external support reduces assembly deviations and welding deformation, significantly improving the assembly accuracy and structural strength of the transformer tank.

[0016] 3. The components of this invention can be quickly assembled and disassembled through structures such as T-screws and threaded connections. The adjustment process does not require complicated tools. With the assistance of a drive motor, the intensity of manual operation is greatly reduced. The inner support device reserves a manual operation area, and the outer support device integrates an inclined ladder and a work platform, which facilitates personnel to carry out internal and external positioning welding and assembly operations, shortens the operation cycle, and improves production efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the external support device of the present invention; Figure 4 This is a schematic diagram of the internal support device of the present invention; Figure 5 This is a schematic diagram of the anti-tipping tie rod of the present invention; Figure 6 This is the present invention. Figure 3 Enlarged view of the structure at point A; Figure 7 This is a schematic diagram of the structure of the base of the present invention; Figure 8 This is a schematic diagram of the limiting device of the present invention; Figure 9 This is a schematic diagram of the structure of the card block of the present invention; In the diagram: 1. Base; 2. Protective cover; 3. Fan; 4. Mounting slot; 5. Limiting device; 51. Limiting rod; 52. Bidirectional screw; 53. Telescopic cover; 54. Moving rod; 55. Sliding rod; 56. Adjusting screw; 57. Drive block; 58. Locking rod; 59. Locking block; 510. Limiting slot; 6. External support device; 61. Bottom support frame; 62. Working platform; 63. Safety rope hanging rod; 64. Mounting slot; 65. Inclined ladder; 66. Safety door; 67. Frame fixing assembly; 671. Fixing screw; 672. Fixing nut; 673. Fixing block; 68. Fixing plate; 7. Internal support device; 71. Mounting frame; 72. Counterweight mounting plate; 8. Anti-tipping tie rod; 9. Positioning screw; 10. Sliding mounting block. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose. Example

[0019] Please see Figure 1 - Figure 9 This invention provides a technical solution: a welding fixture for assembling a transformer tank body, comprising: a base 1, a protective cover 2 symmetrically and slidably connected to the outer wall of the base 1, a fan 3 fixedly installed at the top of the protective cover 2, an installation groove 4 opened on the inner wall of the base 1, a limit device 5 installed inside the base 1, an outer support device 6 installed on the outer wall of the base 1, and an inner support device 7 installed inside the outer support device 6; the outer support device 6 includes a bottom support frame 61, a working platform 62 fixedly connected to the bottom end of the bottom support frame 61, a safety rope hanging rod 63 fixedly connected to the outer wall of the working platform 62, installation slots 64 opened on the outer walls of both the bottom support frame 61 and the working platform 62, a fixing plate 68 fixedly connected to the outer wall of the bottom support frame 61, and an inclined ladder 65 fixedly connected to the outer wall of the bottom support frame 61, with a safety door 66 rotatably connected to the top of the inclined ladder 65; the inner support device 7 includes an installation frame 71, a counterweight installation plate 72 fixedly connected to the bottom end of the installation frame 71.

[0020] The bottom end of the bottom support frame 61 is slidably connected to the outer wall of the base 1, the top end of the inclined ladder 65 is fixedly connected to the outer wall of the working platform 62, the bottom end of the bottom support frame 61 is slidably connected to the frame fixing component 67, and the outer wall of the mounting frame 71 is slidably connected to the outer wall of the base 1.

[0021] The mounting slot 64 is internally equipped with an anti-tipping rod 8 and a positioning screw 9. The outer walls of the anti-tipping rod 8 and the positioning screw 9 are threadedly connected to a sliding mounting block 10. The outer wall of the sliding mounting block 10 is slidably connected to the inner wall of the mounting slot 64. The outer wall of the positioning screw 9 is threadedly connected to the inner wall of the mounting frame 71. The positioning screw 9 and the anti-tipping rod 8 are installed in the mounting slots 64 on the four bottom support frames 61 via the sliding mounting block 10. Adjustment of the positioning screw 9 allows for adjustment of the tank wall position and angle during assembly. The anti-tipping rod 8 can be installed on the upper part of the external working platform 62 to hook onto the upper part of the tank wall and prevent it from tipping over.

[0022] The frame fixing component 67 includes a fixing screw 671, a fixing nut 672 threadedly connected to the top end of the fixing screw 671, and a fixing block 673 rotatably connected to the bottom end of the fixing screw 671.

[0023] The outer wall of the fixing screw 671 is slidably connected to the inner wall of the bottom support frame 61, the outer wall of the fixing nut 672 is slidably connected to the outer wall of the bottom support frame 61, and the outer wall of the fixing block 673 is slidably connected to the inner wall of the mounting groove 4. Through the threaded connection with the fixing screw 671, the fixing screw 671 drives the fixing block 673 to move upward until it contacts the inner wall of the base 1, thereby completing the fastening of the bottom support frame 61 to the mounting groove 4 of the base 1 and ensuring the stable installation of the outer support device 6.

[0024] The limiting device 5 includes a bidirectional screw 52, ​​a movable rod 54 is symmetrically threaded to the outer wall of the bidirectional screw 52, ​​a limiting rod 51 is symmetrically arranged on the outside of the bidirectional screw 52, ​​and a sliding rod 55 is fixedly connected to the outer wall of the movable rod 54.

[0025] The outer wall of the bidirectional screw 52 is rotatably connected to the inner wall of the base 1, the outer wall of the moving rod 54 is slidably connected to the inner wall of the base 1, the outer wall of the limiting rod 51 is fixedly connected to the inner wall of the base 1, and the inner wall of the moving rod 54 is slidably connected to the outer wall of the limiting rod 51.

[0026] A telescopic cover 53 is fixedly connected to the outer wall of the movable rod 54. The end of the telescopic cover 53 away from the movable rod 54 is fixedly connected to the inner wall of the base 1. The outer wall of the sliding rod 55 is slidably connected to the inner wall of the base 1.

[0027] The inner wall of the sliding rod 55 is symmetrically provided with adjusting screws 56. The outer wall of the adjusting screw 56 is screwed to a drive block 57. The outer wall of the drive block 57 is fixedly connected to a locking rod 58. The outer wall of the locking rod 58 is slidably connected to a locking block 59. The inner wall of the locking block 59 is provided with a limit locking groove 510.

[0028] The outer wall of the drive block 57 is slidably connected to the inner wall of the sliding rod 55, the outer wall of the locking block 59 is slidably connected to the outer wall of the bottom support frame 61, and the inner wall of the limiting slot 510 is slidably connected to the outer wall of the fixing plate 68.

[0029] Working principle: In use, initially, the locking block 59 of the limiting device 5 contacts the bottom support frame 61. Under the action of gravity, the locking block 59 slides downward on the locking rod 58, causing the limiting slot 510 to engage in the fixing plate 68, thus completing the connection between the limiting device 5 and the outer support device 6. Then, according to the size of the tank body, the external drive motor rotates the bidirectional screw 52 of the limiting device 5, causing the symmetrically threaded moving rod 54 to slide along the outside of the limiting rod 51, thereby causing the fixedly connected sliding rod 55 to move. Through the connection between the locking block 5 on the sliding rod 55 and the fixing plate 68 on the outer support device 6, it causes the bottom support frame 61 to move longitudinally on the base 1. Adjusting the position of the bottom support frames 61 at both ends, and then rotating the adjusting screw 56 on the sliding rod 55, through the threaded screw of the drive block 57, causes the drive block 57 to move laterally on the sliding rod 55. The outer support device 6 moves laterally, and then the limiting slot 510 of the locking block 59 is connected to the fixing plate 68 of the outer support device 6, so that the outer support device 6 can move laterally. After the adjustment is completed, when the bidirectional screw 52 and the adjusting screw 56 no longer rotate, the outer support device 6 can also be pre-fixed to prevent movement under the action of external force, thus completing the initial positioning of the outer support device 6. During the movement of the outer support device 6, the fixing block 68 on the bottom support frame 61 slides in the mounting groove 4. When it stops moving, the fixing nut 672 is rotated, and through the threaded connection with the fixing screw 671, the fixing screw 671 drives the fixing block 673 to move upward until it contacts the inner wall of the base 1, thereby completing the fastening of the bottom support frame 61 to the mounting groove 4 of the base 1, ensuring the stable installation of the outer support device 6, and protecting the internal components of the limiting device through the telescopic cover 53 to prevent welding impurities from entering. The large transformer tank shell to be welded is then slowly hoisted onto the welding table, so that the shell is fitted onto the outside of the mounting frame 71 of the internal support device 7, ensuring that the bottom of the shell is in contact with the preset support surface at the top of the base 1, thus initially achieving the placement and positioning of the shell and preventing the shell from shifting due to its own weight. The two mounting frames 71 are connected and fixed to the bottom of the base 1 with T-bolts. The counterweight mounting plate 72 is used to add counterweights, which not only prevents the tank wall from tipping over, but also helps to control the welding deformation of the tank bottom through the self-weight of the frame. The positioning screw 9 and the anti-tipping tie rod 8 are installed in the mounting slots 64 on the four bottom support frames 61 through the sliding mounting block 10. The position and angle of the tank wall can be adjusted by adjusting the positioning screw 9 in conjunction with the tank assembly process. The anti-tipping tie rod 8 can be installed on the upper part of the external working platform 62 to hook the upper part of the tank wall and prevent the tank wall from tipping over. Thus, the assembly of the transformer tank is completed while ensuring the safety of personnel. The adjusting screw can accurately control the position and angle of the tank wall, and the anti-tipping tie rod hooks the upper part of the tank wall for further reinforcement. During the welding process, personnel enter the work platform 62 via the inclined ladder 65, and ensure the safety of the access passage by attaching safety belts to the safety rope hanging pole 63 and closing the safety door 66. After the protective covers 2 at both ends are sealed, the welding fumes are prevented from spreading. Magnetic blocks are installed at the contact parts of the two protective covers 2, making it difficult for the protective covers 2 to separate after they are sealed. Lighting is installed inside the protective covers 2 to assist the internal welding work. The fumes generated inside the protective covers 2 are drawn away by the fan 3 installed at the top of the protective covers 2, and the fumes are purified and discharged by the existing air purification device installed on the outside.

[0030] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A welding jig for assembling a transformer oil tank body, characterized by comprising: Include: The outer wall of the base (1) is symmetrically connected with the protective cover (2), the top end of the protective cover (2) is fixedly installed with the fan (3), the inner wall of the base (1) is provided with the installation groove (4), the inside of the base (1) is provided with the limiting device (5), the outer wall of the base (1) is provided with the outer support device (6), the inside of the outer support device (6) is provided with the inner support device (7); The outer wall of the base (1) is symmetrically connected with the protective cover (2), the top end of the protective cover (2) is fixedly installed with the fan (3), the inner wall of the base (1) is provided with the installation groove (4), the inside of the base (1) is provided with the limiting device (5), the outer wall of the base (1) is provided with the outer support device (6), the inside of the outer support device (6) is provided with the inner support device (7); 2. The welding tool for assembling a transformer tank according to claim 1, characterized in that: The bottom end of the bottom support frame (61) is connected with the outer wall of the base (1), the top end of the inclined ladder (65) is fixedly connected with the outer wall of the work platform (62), the bottom end of the bottom support frame (61) is connected with the frame fixing assembly (67), the outer wall of the installation frame (71) is connected with the outer wall of the base (1).

3. The welding tool for assembling a transformer tank according to claim 1, characterized in that: The inside of the installation clamping groove (64) is provided with the anti-toppling pull rod (8) and the positioning lead screw (9), the outer wall of the anti-toppling pull rod (8) and the positioning lead screw (9) is threadedly connected with the sliding mounting block (10), the outer wall of the sliding mounting block (10) is connected with the inner wall of the installation clamping groove (64), the outer wall of the positioning lead screw (9) is threadedly connected with the inner wall of the installation frame (71).

4. The welding tool for assembling a transformer tank according to claim 2, characterized in that: The frame fixing assembly (67) includes a fixed screw (671), the top end of the fixed screw (671) is threadedly connected with a fixed nut (672), and the bottom end of the fixed screw (671) is rotatably connected with a fixed block (673).

5. The welding tool for assembling a transformer tank according to claim 4, characterized in that: The outer wall of the fixed screw (671) is connected with the inner wall of the bottom support frame (61), the outer wall of the fixed nut (672) is connected with the outer wall of the bottom support frame (61), and the outer wall of the fixed block (673) is connected with the inner wall of the installation groove (4).

6. The welding fixture for assembling a transformer tank according to claim 1, characterized in that: The limiting device (5) includes a bidirectional screw (52), the outer wall of the bidirectional screw (52) is symmetrically connected with a moving rod (54), the outside of the bidirectional screw (52) is symmetrically provided with a limiting rod (51), and the outer wall of the moving rod (54) is fixedly connected with a sliding rod (55).

7. The welding tool for assembling a transformer tank according to claim 6, characterized in that: The outer wall of the bidirectional screw (52) is rotationally connected with the inner wall of the base (1), the outer wall of the moving rod (54) is slidingly connected with the inner wall of the base (1), the outer wall of the limiting rod (51) is fixedly connected with the inner wall of the base (1), and the inner wall of the moving rod (54) is slidingly connected with the outer wall of the limiting rod (51).

8. The welding tool for assembling a transformer tank according to claim 6, characterized in that: The outer wall of the moving rod (54) is fixedly connected with the telescopic cover (53), one end, away from the moving rod (54), of the telescopic cover (53) is fixedly connected with the inner wall of the base (1), and the outer wall of the sliding rod (55) is slidingly connected with the inner wall of the base (1).

9. The welding fixture for assembling a transformer tank according to claim 8, characterized in that: The inner wall of the sliding rod (55) is symmetrically provided with the adjusting screw (56), the outer wall of the adjusting screw (56) is screw-connected with the driving block (57), the outer wall of the driving block (57) is fixedly connected with the clamping rod (58), the outer wall of the clamping rod (58) is slidingly connected with the clamping block (59), and the inner wall of the clamping block (59) is provided with the limiting clamping groove (510).

10. The welding fixture for assembling a transformer tank according to claim 9, characterized in that: The outer wall of the driving block (57) is slidingly connected with the inner wall of the sliding rod (55), the outer wall of the clamping block (59) is slidingly connected with the outer wall of the bottom support frame (61), and the inner wall of the limiting clamping groove (510) is slidingly connected with the outer wall of the fixed plate (68).

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